... the needs of decreasing temperature of valuable equipment such as electric microscope, electric probe, ultra-high vacuum sputtering instrument, X ray instrument ... ,poor water quality, poor water pressure, high temperature. DLSB-40/20,30,40,80,120 modelRefrigerating abilityCirculating abilityControl-temp abilityWorking conditionsoverallCapacityMin tempRefrigerating capacityflowliftTemp ...